Create Group Tree option no longer available in report designer

I am currently using Crystal Reports 2008 report designer to create reports which are embedded in our application. We deploy a run time version of Crystal within our application. In previous versions there was a report setting in the report designer to "Create Group Tree", this appears to no longer be available in Crystal 2008. My question is... Is there a way to enable this option outside of the report designer? Is there a setting that I am just missing? This is causing an issue since I cannot upgrade existing reports to the 2008 version without losing the ability to display the group tree. thanks